Search found 10 matches

by yasminea 3L
Fri Dec 02, 2016 2:38 pm
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: HW 13.13
Replies: 1
Views: 470

HW 13.13

The pH of 0.40 m HF(aq) is 1.93. Calculate the change in pH when 0.356 g of sodium uoride is added to 50.0 mL of the solution. Ignore any change in volume.
by yasminea 3L
Mon Nov 28, 2016 10:16 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: HW 12.47
Replies: 1
Views: 403

HW 12.47

The pKa of HIO(aq), hypoiodous acid, is 10.64 and that of HIO3(aq), iodic acid, is 0.77. Account for the difference in acid strength.
by yasminea 3L
Tue Nov 15, 2016 12:51 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K [ENDORSED]
Replies: 1
Views: 323

K [ENDORSED]

When do we use Kᶜ instead of K?
Thank you!
by yasminea 3L
Fri Nov 11, 2016 4:32 pm
Forum: Naming
Topic: Naming
Replies: 2
Views: 421

Naming

When do we use hyphens when naming a specific compound? Also, does anyone have suggestions on how to keep track of all the names and how to study for the quiz?
Thank you!
by yasminea 3L
Thu Oct 27, 2016 6:45 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Character [ENDORSED]
Replies: 2
Views: 1442

Ionic Character [ENDORSED]

For each pair, determine which compound has bonds with greater ionic character. a) PH₃ or NH₃; b) SO₂ or NO₂; c) SF₆ or IF₅.
by yasminea 3L
Wed Oct 19, 2016 4:00 pm
Forum: Sigma & Pi Bonds
Topic: Momentum Quantum Numbers [ENDORSED]
Replies: 1
Views: 358

Momentum Quantum Numbers [ENDORSED]

What are the principal and orbital angular momentum quantum numbers for each of the following orbitals?
a) 2s
b) 6f
c) 4d
d) 5p
by yasminea 3L
Sun Oct 09, 2016 1:35 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Integrated Exercises on Infrared Spectroscopy
Replies: 1
Views: 479

Integrated Exercises on Infrared Spectroscopy

Infrared spectroscopy is an important took for studying vibrations of molecules. Just as an atom can absorb a photo on suitable energy to move an electron from one electronic state to another, a molecule can absorb a photon of electromagnetic radiation in the infrared region to move from one vibrati...
by yasminea 3L
Thu Oct 06, 2016 2:37 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Hydrogen Spectrum
Replies: 3
Views: 558

Re: Hydrogen Spectrum

How were you able to arrive at that answer?
by yasminea 3L
Wed Oct 05, 2016 4:26 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Hydrogen Spectrum
Replies: 3
Views: 558

Hydrogen Spectrum

Lines in the Balmer series of the hydrogen spectrum are observed at 656.3, 486.1, 434.0, and 410.2 nm. What is the wavelength of the next line in the series?
by yasminea 3L
Sun Oct 02, 2016 2:18 pm
Forum: Properties of Light
Topic: Quantum World - Light
Replies: 1
Views: 559

Quantum World - Light

A lamp rated at 40. W emits blue light at wavelength 470 nm. How many photons of blue light can the lamp generate in 2.0 s? How many moles of photons are emitted in that time interval?

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